Answer:
-4+(-9)
Step-by-step explanation:
You change the minus signs into and addition sign and make the number a negative.
The expression for the kinetic energy is mass times velocity squared over two
For the first question that gives us 2,25 joules
If the ball is at the given height then it has a further 60 Joules in potential energy.
Answer is D
Answer: 
<u>Step-by-step explanation:</u>
Answer:
33.
Step-by-step explanation:
In order to find range, you must subtract the largest amount given by the smallest amount. In this case, it would be 94-61=33.
To find the answer, we can first find the age of Rolando in four year:
17+4
=21
We can then proceed to find the current age of Marisa,which is 3/2 of Rolando’s age calculated above:
Let Marisa’s age be y.
3/2 y =21
y = 21 × 2/3
y = 42/3
y = 14
Therefore Marisa is currently 14 years old.
In three years, Marisa would be:
14+3
=17
Therefore, she will be 17 years old.
Hope it helps!
